Reamer.



H. T. TAYLOR.

. .REAMBR.

APPLICATION FILED MAR. 23, 1914. 1, 1 1 3,067. 1

Patented 0013.6, 1914.

3 SHEETSSHEET 3 M m MN N\ B Inventor,

At torneys- NE ll STATES PATENT onrron.

HARRY T. TAYLOR, OF FETAL, MISSISSIPPI.

REAMER:

Specification of Letters Patent.

Application filed March 23, 1914. Serial No. 826,646.

Patented Oct. 6,1914.

To all whom it may concern Be it known that I, HARRY T. TAYLOR, a. \CltlZBD of the United States, residing at Petal, in th'ecounty of Forrest and State.

of Mississippi, have invented a new anduseful Reamer, of which the following is a specification.

The present invention appertains to a reaming tool or implement for regrinding to provide in an implementof the character specified,'an 62 P&I1Slbl6 reamer head, where: in novel means are" provided.for-expanding and contracting the cut-tor. blades, and for looking or bindingthemat, any adjusted positions, r

It is also within the-"scope of the present invention, toprovide a reamer of the nature indicated, which shall be comparatively simple, compact, durable and inexpensive in construction, as well asbeingsimple, con,-

venient, ractical and efiicient in its use. \Vith tie foregoing and other objects in view which will appearfas thedescription proceeds, the invention resides in the combination and arrangementof parts and in the details of. construction hereinafter described and claimed, it being understood that changesin the precise embodiment of the invention herein disclosed, can be made within the scopeof what is claimed,'without departing from the spirit of theinvention. The invention has been illustrated in its preferred embodiment'in the accompanying drawings, wherein I i Figure 1 is a side elevation of one of the reamer heads, constructed in accordance with the present invention. Fig. 2 is a. 1011- gitudinal' sectional view of the parts; de-.

picted in Fig. 1. Fig. 3 is a central cross section of the reamer head. Fig. 4 is a fragmental perspective view of one of the cutter blade looking or binding wedge bars. Fig. 5; is an elevation of a complete implement, portions being broken away, illustratmg a-pa r of the reamer heads for grinding. or reaming a pair of bear1ngss1multaneously. Fig. 6 is a side elevation of -a complete implement, embodying. a plurality or the reamer heads, for grindingor reaming the bearings for the crank shaft of anautomobile or other internal combustion engine.

Fig. 7 is aside elevation ofa reamer adapt- 5 ed to be employed for lathe anddrill press work. Fig. 8 is an enlarged sectional detail illustrating modified forms of cutters 'or blades.

' In carrying out the present invention,

there is provided a reamer head shaft 1,\

which. has a tapered spindle orarbor 2 at one end, and upon which the reamer head is mounted-The reamer head includes a cylindrical or tubular shellor sleeve 3, having a tapered bore fittingover the spindle or arbor 2, and having an inner longitudinal keyway l engaged by a key 5 carried by the central portion of the spindle 2, to lock the shell. or sleeve 3 against rotation on the V spindle. -A. retaining nut 6 is threaded upon the free end .of the spindle 2 to:- secure the shell'or. sleeve 3 thereon, it being noted that when the:shell or sleeve 3 1s forced home upon the spindle 2, the shell or sleeve 5 will be centered with respect to the reamer head shaft 1;]

, The shell or sleeve 3 is provided with an annular series of longitudinal slots or rooves 7, which extend fromithe outer or iiree end 'of the-she'll or sleeve to a point short of the inner end thereof, the inner end of the shell or sleeve abutting againstthe end of the shaft 1, asqclearly seen in Fig.2.

The, bottom portions .8 of the slots? are dovetailed, and are inclined or diverge' from the outer or free end of the shell to the inner, 1

ends of the slots. v Cutter blades 9 fit snugly and slidably within the slots! and are provided at their 10o inner' edges with the dove-tailed portions 10 engaging. the dove-tailed portions 8 of the slots, to'permitthe cutter blades to'slide longitudinally, and to constrain them from beingwithdrawn radially from the shell or sleeve The. outer or-cutting edges of the blades 9 project from the shell or-sleeve 3", and are parallel, while the inner edges of. the blades are inclined or diverge from the outer or free ends of thebladesto their inner ends, similar to-the bottoms of the slots 7,, whereby the blades will be moved radially, when they are slid longitudinally within the slots 7. v

The shell or sleeve 3 is provided with exterior screw threads 11 between the innerends of the slots 7, and the inner end of the shell, for the purpose which will hereinafter appear. I

In order to lock or bind the'cutter blades in position, and to assist in bracing the blades while in action, Wedge bars 12 are disposed snugly between the free portions of the blades, and are coextensive therewith, the edges of the wedge bars 12 being beveled tofit the sides of tha blades, and the ends of the wedge or locking bars 12 being provided with projecting threaded tongues or portions 13. The portions or tongues 13, at each end of the cutter blades or reamer head, taper, as a whole, and binding nuts 14' are threaded upon the projec-.

tions or tongues 13 at each end. The nuts 14 are preferably providedwith'circumferential series of sockets for the engagement of a-spanner wrench, and are also preferably knurled for convenience in tightening or loosening the nuts-14 by hand. The wedge or binding bars 12 are provided with longitudinal depressions or channels 15 directly in advance of the cutting edges of the blades, for receiving the chips when the reamer head is in action. When the nuts 14 are tightened against the ends of the cutter blades, the wedge or locking bars 12 will be compressed, or contacted, as a whole, to securely bind the cutter blades in position, the cutter blades also being held. against endwise' movement by reason of their terminal engagement with the nuts 14. When the nuts 14 are loosened, the wedge bars 12 will be relieved from the cutterblades, and the cutter blades may then be slid longitudinally with the wedge bars 12 and nuts 14, to adjust the cutter blades radially to the diameter desired, within the limits of the particular-reamer head.

In' order to facilitate the longitudinal adjustment of the cutter blades and-to en-. able the cutter blades to be adjusted to a nic ety, the inner tongues or projections 13 are provided with angular lips or flanges 16 at their free ends, and a nut 171s threaded upon the threaded portion 11 of the shell or sleeve 3, the nut 17 having'an inturned "flange or rim 17 engaging over the-lips or flanges l6, andv the nut'17- resting-against the said lips or fiangeslti, whereby when the nut If is threaded or-adjusted upon the inner end portion of the shell or sleeve 3, the wedge or locking bars 12 maybe adjusted longitudinally, after they have been loosened, to thereby slide the cutter blades similarly.

As a specific embodiment of the invention,

there is illustrated in Fig. 5, a reaming tool or implement for grinding or reaming a vthe implement.

pair vof journal bearings simultaneously.

This implement or appliance comprises .a

main shaft or spindle 1 having a ratchet wheel 18 intermediate its ends, a handle or lever 19 being loosely connected to the shaft 1% by means of a fork 20 having its ends loosely embracing the shaft 1 astIide the ratchet wheel 18. A'pawlor dog 21 is carried by the fork 20 and cooperates with the ratchet wheel 18. Inasmuch as the specific connection of the handle or .lever 19 with the shaft 1 is of no particular importance, the same need not be described or illustrated -in detail, it being suflicientthat the lever 01' main shaft 1 whereby the reamer heads may be expanded and contracted to-spacethem apart longitudinally to the required distance, according to the spacing of the bearings desired to be ground or reamedby In using the implement illustrated in Fig.- 5, the caps or removable sections of the bearlugs to be ground or reamed, are removed,

and the reamer heads are then placed within the bearings, and the caps or removable sections are then again secured in place. It is evident that the reamer heads may be adjustedl longitudinally to properly accomn1odate the bearings, and after'the implement has thus been applied. to-the bearings, the reamer heads may be rotated throughthe medium of the handle or lever 19, whereby the bearings may be ground or reamed out, to the desired extent. In this manner, the two bearings may be ground or reamed simultaneously, to assure the proper alinement of the bores of, the bearings, whereby the hearing will accommodate the shaft in a most efiicient manner. After the bearings have been ground, the implement may be removed, by first removing the caps or removable sections of the bearings, as will be evident; In some instances, it might be preferable to project the reamer heads into the bearings, if this is possible, instead of removing the caps of the bearings, the same being permitted by reason of the sliding en-v gaging of the reamer head shafts l'wit'h the main shaft or spindle 1*.-

The cutter blades of the reamer head illustrated in'Figs. 1 and 2, may be adjusted radially to "a nicety, by first loosening the binding nuts 14, and then rotating the nut 17, so as to. adjust the wedge bars 12 longitudinally, which will thus carry the cutter blades longitudinally, to either project or retract them as they are so moved. After they cutter blades have been properly adbar 19 ,usted, the binding nuts 14 may be tightened, to again clamp or bind the cutter blades be tween the wedge bars, it also being observed that the wedge bars will serve to brace the cutting edge portions of the blades when the reamer head is in action.

The implement illustrated in Fig. (3 is particularly designed for reaming or boring out the bearings of crank shafts, or the like, the sleeves 3 of the reaming devices bein feathered or slidable upon the shaft 1', and each being provided with a split tapered threaded portion 22 at one end, upon which is threaded a binding nut 23. Thus, when the binding nuts 23 are tightened, the split portions 22 will be contracted tightly against the shaft 1, to lock the reaming devices against longitudinal movement, the reaming devices being readily adjusted longitudinally to the proper positions by loosening the binding nuts 23, as will be apparent. The shaft 1 may be provided -with a tommy at one end, or with any other suitable means for rotating it.

In Fig. 7, the body 3 provided with a shank 1" in order that the reamer may be employed on lathes and drill presses.

In Fig. 8, modified forms of cutters 9 are illustrated, the same being provided with 'T-heads 10 engaging in T-slots 7 provided in the body 3 of the reamer. Thus, the use of dovetail slots is eliminated, and the heads 10 of the cutters may be secured to the inner edges of the cutters by means of screws or other securing devices.

Having thus described what is claimed as new is 1. A reamer head including a member, longitudinal cutter blades having their inner edges slidably engagingthe said member, wedge bars fitting between the cutter blades, and means embracing the ends of thewedge bars for binding the cutter blades 1n position.

2. A reamer head embodying a member, longitudinal cutter blades having their in- :er edges slidably engaging the said'mem ner, wedge bars fitting between the blades and having their ends projecting beyond he ends of the blades, and binding nuts threaded upon the ends of the said bars.

3. A reamer head embodying a member iaving longitudinal slots provided with inclined portions, cutter blades having their nneredges engaging the said slots and havag inclined portions engaging the said inlined portions of the slots, wedge bars fit- Lng between the free portions of the blades, and means embracing the ends of the said )ars for binding the blades in place.

4. A reamer head embodying a member of the reamer, is

the invention, I

having longitudinal slots provided With inclined portions, cutter blades having their inner edges engaging the said slots and having inclined portions engaging the said inclined portions of the slots, wedge bars fitting between the free portions of the blades, the ends of the bars projecting beyond the ends of the blades, and binding nuts threaded upon the ends of the bars.

5. A reamer head including a member, longitudinal cutter blades having their inner edges slidably engaging'the said member, wedge bars fitting between the cutter blades, means embracing the ends of the wedge bars for binding the cutter blades in position, the said-member,.certain ends of the wedge bars andthe adjusting nut having interengaging means. i

6. A reamer head embodying a member, longitudinal cutter blades having their inner edges slidably engaging the said member, wedge bars fittin between the blades and having their en s projecting beyond the ends of the blades, binding nuts threaded upon the ends of the said bars, and an' adjusting nut threaded upon the said member, certain ends of the wedge bars and the adjusting nut having interengaging means.

and an adjusting nut threaded upon 7. A reamer head embodying a member '7 having longitudinal slots provided with inclined portions cutter blades having their inner edges engaging the said slots and having inclined'portions engaging the said inclined portions of the slots, wedge bars fitting between the free portions of the blades, means embracing the ends of the said bars for binding-the bladesin place, and an adjusting nut threaded upon the said member, certain ends of the wedge bars and the adjusting nut having interengaging means.

8. A reamer head emhodyin a member having longitudinal slots provided with inclined portions, cutter blades having their inner edges engaging the said slots and having inclined portions engaging the said inclined portions of the slots, wedge bars fitting between the free portions of the blades,

the ends of the bars projecting beyond the ends of the blades, binding nuts threaded upon the .ends of the bars, and an adjusting n'ut threaded upon the said member, certain ends of the wedge'barsand the adjusting nut having interengaging means.

In testimony thatI claim the foregoing as my own, I have hereto afiixed my signature in the presence of two witnesses.

HARRY T. TAYLOR. itnesses O. R. Dams, J O. MoRANE'r 

